Cannot confirm invoice/vendor bill with account_move_tier_validation

[MarcoDuesuenceliSAMSA-IT]

Module

account_move_tier_validation version 16

Describe the bug

Although all validations have been completed and are even listed in the history, the message "The operation is under validation" is always displayed.

To Reproduce

Affected versions: V16

Steps to reproduce the behavior:

1. Create any definition that causes a request for validation
2. Start and finish all validations so that you can in histoy that are all finished
3. Click on "confirm" in a vendor bill e.g.

Expected behavior
I would expect that the vendor bill or invoice get confirmend and posted.

Additional context
Add any other context about the problem here. (e.g. OS, Python version, ...)